My view is that ships like Perry and Spruance with dual helicopter hangars at the time were as much of a need driven by the lack of helicopter hangars aboard many of the USN's surface combatants at the time, as much as it was by the ASW demands of the era (and indeed, the USN's ASW demands of the era are also somewhat different to the PLAN's ASW demands of the current era, which is more relevant in the next part of my reply).
I understand it, but that doesn't mean it's correct or constructive for this to come up every time we discuss a new surface combatant class or variant of a class.
The discussion around "how many hangars should a PLAN surface combatant has" is never just about that, because it is really asking "what kind of missions does or should the PLAN have".
That is a much bigger question than what a thread about XYZ surface combatant class can yield, but in terms of what is reasonable for a specific thread, in this case, I think it is very reasonable for us to say that 054B having a single helicopter hangar is very much in line with contemporary global trends and other contemporary frigates of this size and role and mission profile.
